Rainfall
Daily rainfall, monthly rainfall, annual totals, annual maxima, rainfall-frequency analysis, effective rainfall and design rainfall.
Rainfall data →
Shared model evidence
Model Data Hub
Common datasets are stored and documented once, then referenced by HEC-HMS, SWAT and CROPWAT. This avoids duplicating rainfall, climate, terrain, land-use or soil information across individual model pages and makes the HARE reconstruction easier to review and reproduce.
Data principle.
A dataset may serve more than one model. Rainfall and climate information,
for example, supports HEC-HMS rainfall-runoff analysis, SWAT watershed
simulation and CROPWAT irrigation-demand assessment. Each model may process
the data differently, but the original source and provenance should remain
clearly documented.
Climate & ETo
Minimum and maximum temperature, relative humidity, wind speed, sunshine or solar radiation, reference evapotranspiration and potential evapotranspiration.
Climate data →Terrain & Drainage
DEM, watershed boundary, subbasins, stream network, slopes, elevations, flow directions and drainage paths.
Terrain →Land Use
Cropland, trees and orchards, banana areas, built-up land, shrubs, bare ground, water bodies and command-area classifications.
Land use →Soils
Soil units, texture, hydrologic soil groups, available soil water, rooting-zone properties and modelling classifications.
Soil data →Crop Data
Crop type, planting date, growing-season length, initial, development, mid-season and late-season stages, crop coefficient Kc and rooting depth.
Crop data →Cropping Pattern
Crop areas, planting calendars, cropping intensity, command-area allocation and monthly crop coverage used to aggregate field demand to scheme demand.
Cropping pattern →Irrigation Requirement
Crop evapotranspiration, effective rainfall, net irrigation requirement, gross irrigation requirement, irrigation efficiency and peak scheme demand.
Irrigation demand →River Flow & Discharge
Historical or reconstructed flows, flood peaks, dry-period flows, modelled hydrographs and watershed discharge.
Flow data →
Current evidence
Data Status
| Dataset | Main use | Current information | Status |
|---|---|---|---|
| CHIRPS rainfall | HEC-HMS / rainfall reconstruction | Daily rainfall and annual-maxima analysis available. | Available |
| FAO historic climate | CROPWAT reference | 1961–1990 climate normal for approximately 6.03°N, 37.56°E at 1239 m elevation. | Available |
| Recent SWAT climate | SWAT / CROPWAT cross-check | Daily climate series used for recent watershed simulation. | Available |
| Digital elevation model | HEC-HMS / SWAT | Watershed and drainage delineation completed. | Available |
| Land-use raster | SWAT / command-area reconstruction | Modern land-use classes prepared for the Hare study area. | Available |
| Soil data | SWAT / CROPWAT | Hare watershed soil information and hydrologic classifications prepared. | Available |
| Crop coefficients and crop calendar | CROPWAT | To be entered and checked crop by crop against the 1995 Hare study and modern crop evidence. | In progress |
| CROPWAT irrigation requirement | Scheme design | ETc, effective rainfall, NIR, GIR and peak scheme demand. | Next stage |
Model relationships
How the Shared Data Feed the Models
Flood Analysis
Rainfall, basin area, terrain, loss parameters and timing parameters are transformed into design hydrographs and peak flood discharges.
Watershed Simulation
Climate, DEM, land use, soil and HRU information are combined to simulate runoff, ET, groundwater and catchment water balance.
Crop Water Demand
Climate, rainfall, soil, crop coefficient and planting-calendar data are converted into ETc, effective rainfall, irrigation requirements and scheme demand.